You???ll normally experience one or more of the following symptoms somewhere in the lower leg ??? Ache, Throb, Tightening, Hot sensation, Tenderness, Compression, Knifing somewhere in the middle 2/3rds of the shin, either at the front (A), the sides (M & L) or sort of behind (P) and to a more M aspect, like you want to get your thumb in behind your tibia (look at the pic above to check).